Refine
Year of publication
Has Fulltext
- yes (622)
Is part of the Bibliography
- no (622)
Keywords
- Heavy Ion Experiments (16)
- Hadron-Hadron Scattering (7)
- Hadron-Hadron scattering (experiments) (6)
- Collective Flow (4)
- Heavy-ion collision (4)
- Heavy Quark Production (2)
- Jets (2)
- Jets and Jet Substructure (2)
- Lepton-Nucleon Scattering (experiments) (2)
- Particle Correlations and Fluctuations (2)
- Particle and resonance production (2)
- Quark-Gluon Plasma (2)
- ALICE detector (1)
- Anti-nuclei (1)
- Boosted Jets (1)
- Collective Flow, (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Fibre/foam sandwich radiator (1)
- Hard Scattering (1)
- Ionisation energy loss (1)
- Jet Physics (1)
- Jet Substructure (1)
- LHC (1)
- Material budget (1)
- Multi-Parton Interactions (1)
- Multi-wire proportional drift chamber (1)
- Neural network (1)
- Particle and Resonance Production (1)
- Particle correlations and fluctuations (1)
- Pb–Pb collisions (1)
- QCD (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- TR (1)
- Tracking (1)
- Transition radiation detector (1)
- Trigger (1)
- Xenon-based gas mixture (1)
- dE/dx (1)
- detector (1)
- experimental results (1)
- heavy ion experiments (1)
- quark gluon plasma (1)
Institute
- Physik (621)
- Frankfurt Institute for Advanced Studies (FIAS) (597)
- Informatik (571)
- Hochschulrechenzentrum (1)
A new, more precise measurement of the Λ hyperon lifetime is performed using a large data sample of Pb–Pb collisions at √sNN p ¼ 5.02 TeV with ALICE. The Λ and Λ¯ hyperons are reconstructed at midrapidity using their two-body weak decay channel Λ → p þ π− and Λ¯ → p¯ þ πþ. The measured value of the Λ lifetime is τΛ ¼ ½261.07 0.37ðstat:Þ 0.72ðsyst:Þ ps. The relative difference between the lifetime of Λ and Λ¯ , which represents an important test of CPT invariance in the strangeness sector, is also measured. The obtained value ðτΛ − τΛ¯Þ=τΛ ¼ 0.0013 0.0028ðstat:Þ 0.0021ðsyst:Þ is consistent with zero within the uncertainties. Both measurements of the Λ hyperon lifetime and of the relative difference between τΛ and τΛ¯ are in agreement with the corresponding world averages of the Particle Data Group and about a factor of three more precise.